Hrm, I hate speaking to a crowd. They are never quiet enough to hear you anyways. And I hate how everybody cuts off the others word. It's a mess, because people are idiots and talk all together instead of each after the other. That's what I loved at school: You had to raise your hand to say something. And when we did have group-discussions we had a little ball that we would throw at whoever wanted to say something. Awesome. :rolleyes2:
My mind doesn't necessarily go blank in groups, but the stuff I said above just annoys me, so I will either be quiet or have to scream around. And since I don't like that, I'll rather just shut up.
This also reminds me that when it is not quiet around me; I have troubles to concentrate and think straight. So if I am doing - let's say - a test that needs total concentration I will have troubles if for example my roomie listens to music behind me sooo loud, that I can hear every single word thru his headphones.